# Math Help - taylor series

1. ## taylor series

find the taylor series of y=x^(1/2) centered at a=4 and use the first two terms to apporximate 4.1^(1/2)

2. Originally Posted by twofortwo
find the taylor series of y=x^91/2) centered at a=4 and use the first two terms to apporximate 4.1^(1/2)

Assuming you mean $y= x^{91/2}$, where, exactly, is your problem? Do you know how to differentiate $x^n$? Do you know the formula for the Taylor's series of a function?